Catalytic agent.



UNITED STATES PA 'ENT mm- ALwmMIr'rAsoH, onmsrmn SCHNEIDER, ANDHUeoMoRAWIrz, or LUnwIes- HAFENON-THE-RHINE, GERMANY, assrenons T0mmscnn ammn & some FABRIK, OF LUDWIGSHAFEN-ON-THE CATALYTIC AGENT.

Specification of Letters Patent.

No Drawing. 1

To all whom it may concern Be it known that we, ALwIN MITTASCH,CHRISTIAN SCHNEIDER, and I-Iuoo Momwrrz, citizens of the German Empire,residing at L1ldwigshafen-on-the-Rhine, Germany, have invented new anduseful Improvements in Catalytic Agents, of which the following is aspecification.

.jected to We have discovered new catalytic agents by means of whichcatalytic reactions can be carried out in a very advantageous manner.

.is desirable if the catalytic agent is to be employed for thehydrogenization of organic compounds. After such reduction, thecatalytic agent contains a platinum metal in a metallic form and alsothe elements of an aluminate silicate.

The introduction of the platinum metal into the aluminate silicate canbe effected for instance by digesting the alkali metal aluminatesilicate, or other aluminate silicate,

with a solution of a platinum metal salt.

Or, the zeolite can either direct, or after be ing gently heated, sothat some of the water is driven ofl", be soaked in a solution of aplatinum metal salt, so that the platinum metal salt enters the zeolite,and some replacement of the alkali metal or alkaline earth metal by aplatinum metal takes place, although the alkali remains in the mass.

Artificial zeolites are put on the market under the name of permutite.and are described in British Patent No. 23,706/12 and also in thearticle On Artificial Zeolites by Dr. Siedler on page 262 of the reportof Section 2 of the Seventh International Congress of Applied Chemistryheld in London in 1909.

Catalytic agents in accordance with this invention are very easilyproduced and are characterized by excellent activity, and by their use,the most varied operations, such well and dry it Janina, GERMANY, Aconronarron.

for instance, as hydrogenizati'on, reduction and oxidation can becarried out.

During the production and employment of our catalytlc agents, they mayundergo PhS1CZLl and chemical changes, and we wish to e understood asclaiming the new catalytie agents, as above defined whether they mayhave undergone these changes or not. The following example illustrateshow one of our new catalytic agents can be pre pared, but the inventionis not limited to this example. The parts are by weight.

Eaaam/ple.

Digest 100 parts of the artificial zeolite, sodium aluminate silicate(such asthe ordinary commercial granular sodium permutite found on themarket) with a weak hydrochlorlc acid solution containing one-tenth of a1part, to half a part, of palladium subch orid, either at ordinarytemperature, or whilewarming, until the solution is decolorized. If thecatalytic agent is to be used for hydrogenization purposes, Wash themass and, if desired, reduce it with hydrogen at, for instance, aslightly raised temperature say from 150 to 200 (3., or withformaldehyde at a lower temperature. The catalytic agent which isobtained can be used (either directly, or after pulverization) forinstance, for the hydrogenization, or dehydrogenization, of organiccompounds, and, when liquids are treated, these can with advantage beallowed to trickle over the catalytic agent.

In this example, instead of sodium permutite, other aluminate' silicatecontaining an easily replaceable base, or more than one easilyreplaceable base, can be employed, for

- instance, natural zeolites can be used, such as analcime, natrolite,chabasite,

In a similar manner, other platinum metal zeohtes can be prepared, forinstance, those Patented Feb. 13, 1917. i Application filed June 4,1914. Serial No. 842,959.

of platinum itself and of rhodium, iridium,

ruthenium and osmium. If desired, however, a platinum zeolite can beobtained by heating an artificial zeolite until more or less of thewater has been driven off, and

then soaking it in a solution of platinum hydrochlorid, drying andheating, whereupon, any soluble salts, such as sodium chlorid can beremoved by washing or digesting. An osmium zeolite can be prepared bysoaking a zeolite in asolution of pomssium osmate, and then heating. Ifdesired, the artificial or natural zeolite can first be converted intoammonium zeolite, and this either directly or after heating'can beconverted, for instance, into osmium zeolite, by suitable treatment withpotassium osmate.

N ow what we claim is p 1. A catalytic agent containing the elements ofa platinum metal and an aluminate silicate. I

2. A catalytic agent containing the elements of a platinum metal and analkali metal aluminate silicate.

3. A catalytic agent containing the elements of a platinum metal and azeolite.

4:. A catalytic agent containing the ele-.

ments of a platinum metal and an aluminate silicate in a reduced form.

5. A catalytic agent containing the elements of a platinum metal and analkali metal aluminate silicate in a reduced form.

6. A eata-lytic'agent containing the elements of a. platinum metal and azeolite in a reduced form;

7. A catalytic agent containing the ele ments of palladium and analuminate silicate.

8. A catalytic agent containing the elements of palladium and an alkalimetal aluminate silicate.

- 9. A catalytic agent containing the elements of palladium and azeolite.

10. A catalytic agent containing the elements of palladium and analuminate silicate in a reduced form. a

I 11. A catalytic agent containing the elements of palladium and analkali metal aluminate silicate in a reduced form.

12. A catalytic agent containing the elements of palladium and a zeolitein a reduced form.

13. The process of producing a catalytic agent by causing a platinummetal to replace the whole or a part of the replaceable base of analuminate silicate containing water. Q

i ;;;;l4. The process of producing a catalytic agent by causing aplatinum metal to replace the Whole or a partof the alkali metal of analkali metal aluminate silicate containing water.

15. The process of producing a catalytic agent by causing palladium toreplace the whole or a part of the alkali metal of a zeolite.

16. The process of producing a catalytic agent by causing a platinummetal to replace the Whole or a part of the replaceable base of analuminate silicate containing water and then treating the product untilthe platinum metal is present in the metallic state.

17. The process of producing a catalytic agent by causing a platinummetal to replace the Whole or a part of the alkalimetal

